All Balls Racing Calliper Piston Kit (18-9009) Model_LS2 FF800 Storm II Helmets K&N's Universal Air Filters are

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles

Steel inner casing that is tightly coiled for low compression

Tank gasket

and ventilated 3DF AirFit impact foam that conforms to your body shape and offers a comfortable

Larger 4340 chrome-moly steel axle bar

All Balls Racing Calliper Piston Kit (18-9009) Model_LS2 FF800 Storm II Helmets K&N's Universal Air Filters arePrecision machined from high grade 304 Stainless Steel. Stainless steel reduces thermal conductivity by up to 93% compared to aluminium. Plastic composite pistons are prone to damage and become brittle with age. OEM chrome plated steel and aluminium pistons are prone to corrosion. Eliminates failure prone ceramic inserts found on some KTM models. Each kit contains piston or pistons to rebuild one caliper.